Pressure-regulating valve.



PATENTED MAY 7', 14907..

- R. B. BRUNS.

PRESSURE REGULATING VALVE.

APPLIOATION FILED JULY 10, 1905.

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RICHARD E. BRUNS, OF CHICAGO, ILLINOIS.

PRESSURE-REGULATING VALVE.

Specification of Letters Patent.

Patented May 7, 1907.

Application filed July 10,1905. Serial No. 268,935.

To all whom it may concern:

Be it known that I, RICHARD E. BRUNS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Pressure Regulating Valves, of which the following is a specification.

My invention relates to improvements in gas pressure regulators, and more particularly to pressure regulators adapted for use in conjunction with illuminating gas distribution systems, or other low pressure gas systems.

One of the salient objects of my invention is to provide a combined gas regulator and water trap: and, a further salient object of my invention is to provide in a gas regulator a plural-valve construction wherein one valve regulates the pressure under any ordinary flow of gas, while the secondary valve operates only upon the existence of a demand in excess of the capacity of the ordinary valve to supply.

Other and further objects of my invention will best become apparent from the following description taken in conjunction with the accompanying drawings, wherein,

Figure 1 is a vertical central section of a device embodying my invention. Fig. 2 is a section on line 22 of Fig. 1. Fig. 3 is a fragmentary section of a modified. form of va ve.

Throughout the drawings like numerals of reference refer always to like parts.

. In said drawings 5 indicates in general a casing, divided interiorly by a web or bridge 6 in which are valve openings to be adverted to. Above the web6 is a pressure chamber 7 with which communicates the outlet passages 8, and above the said outlet opening is an annular flange 9, L-shaped in cross section, and preferably cast integral with the walls 5 of the casing, forming with the adjoining portion of the casing wall an annular mercury cup 10, containing a suitable body of mercury into which dips the rimll of a suitable float 11, which closes at its top the pressure chamber 7 in the well known manner.

At a suitable distance above the flange 9 the casing 5 is preferably expanded as at 5 to afford on its inner side a shoulder whereon seats the bridge member 12, suitably secured in place as by screws 13, and at its center supporting the adjusting screw 14:, which is at its lower end provided with the centering the casing,-and may be attached in any Way suitable for ready displacement or removal.

Below the web 6 an intake pipe 18 communicates with the interior of the casing, the casing below said intake being preferably extended, as shown at 5, to form a water trap 19, provided with an outlet 20 suitable closed 'as by a screw 21.

For convenience in cleaning and in assembling the parts, the lower portion 5 of the casing is-preferably detachablysecured to the body of the casing the joint being effected through the usual screw-threading of the parts.

Depending from the float 11 and taking through a central aperture 22 in the web 6, is stem 23, havingdetachably secured thereto a plate 24 provided with a plurality of valve members 25 and 26, preferably of different sizes, arranged and adapted to coact with ports 27, 28 in the web 6. Preferably the valve members 25 and 26 are studs project ing upward from the plate 24 and are preferably so disposed that the larger, auxiliary valve 26 does not begin to open its port 28 until after the smaller main valve 25 has com pleted its port-opening operation. Preferably further, the valves are both so arranged that their opening action is gradual, the main and auxiliary valve members, 25 and 26 respectively, to this end being illustrated in faces 25 and 26.

In Fig. 3 I have illustrated a modified form of valve in which the valve members 25 and 26 are hollow shells open at their upper ends, and each provided with a triangular port, 25 and 26 respectively, the apex of each triangle being downward, so that the closing and opening operations may be gradual. In this form of device preferably each valve shell is arranged to make con- Fig. 1 as provided with tapering upper surnection with the aperture of its port, so as to be constantly guided therein throughout the full range of opening movement of the valve.

The operation of my improved device will be apparent, it being clear that the flow of ITO acter as to be capable of regulating the pressure within the limits of ordinary use, but

when the demand is greater than can be efficiently supplied through the port 27,as for instance when all the lights in a large hall are turned on,-the great reduction in pressure causes such a depression of the float 1 1 as tobring into active operation the auxiliary valve 26, which opens port 28 to supply the abnormal demand. Furthermore it will be seen that the construction is such that the valve member 26 normally acts as a guide, during the operation of the valve member 25, or as shown in Fig. 3 both valve members may constantly subserve guiding functions. It will also be apparent that the construction of the valves shown is such that they constantly tend to clear their apertures of deposits of tar or like impurities, while the chamber below the diaphragm constitutes a water trap from which the water may readily be drained by the removal of screw 21.

While I have herein described in some detail a particular embodiment of my invention, which I have found to be advantageous, I do not desire to be understood as limiting the broader conception of my invention to the specific construction shown, as it will be apparent that numerous changes might be made in the construction without departure from the spirit and scope of my invention.

Having thus described my invention, what I claim and. desire to obtain by Letters Patent of the United States, is:

1. In a pressure regulator, a casing, a web dividing said casing, having a port therein, a mercury cup above the web, a float dipping therein, a bridge spanning the casing, an adjustable part in said bridge, a spring interposed between the float and said part, a valve stem extending downward from the float, and a valve on said stem arranged for coaction with the port.

2. In a pressure regulator, a casing, a webdividing said casing, having a port therein, a mercury cup above the web, a float dipping therein, a bridge spanning the casing, an adjustable part in said bridge, a spring interposed between the float and said part, a valve stem extending downward from the float and a valve on said stem provided with an inclined portion arranged for coaction with the port to gradually diminish the passage open for gas flow as the valve is moved to closed position.

3. In a pressure regulator, a casing, 'a web 6 provided with a port and a guide aperture, a gas chamber above the web, an annular mercury cup above the web, a float dipping therein, and closing the gas chamber at its top, .a bridge 12 above the float, an adjusting screw in said. bridge, a spring interposed between the float and the screw, a valve stem extending downward from said float through the guide aperture in the web, and a valve carried by said stein for coacting with the port in the web.

4. In combination a casing divided by a web 6, having therein a port, the casing below said web being shaped to constitute a water trap, a drain opening from said trap, a closure for said opening, an inlet opening below the web, an outlet opening above the web, a float above the web, a seal for said float, a bridge above the float, an adjusting screw thereon, a spring interposed between said screw and float, a valve stem depending from the float, and a valve carried by said stem arranged to cooperate with said port. 5. In combination, a casing web therein dividing said casing transversely, said web having therein a central guide aperture and two ports, a pressure responsive float above the web, a stem extending from said float through the guide aperture, a plate 24 se cured to said stem and carrying two valves, arranged for coaction with the ports in the web and each constructed to open or close its corresponding port gradually.

In testimony whereof I hereunto set my hand in the presence of two witnesses.

RICHARD E. BRUNS. In the presence of Gno. T. MAY, Jr., MARY Fv ALLEN. 

